The ratio of the total surface area to the lateral surface area of 20 cm and height 60 cm, is

A circular well with a diameter of 2 metres, is dug to a depth of 14 metres. What is the volume of the earth dug out?

If the capacity of a cylindrical tank is 1848 m³ and the diameter of its base is 14 m, the depth of the tank is

The number of coins, each of radius 0.75 cm and thickness 0.2 rightcm, to be melted to make aright circular cylinder of height 8 cm and base radius 3 cm is

66 cm³ of silver is drawn into a wire 1 mm in diameter. The length of the wire will be